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双趋与双避决策情景的ERPs研究 预览 被引量:3

Decision-Making under Approach-approach and Avoidance-avoidance Conflict Situations: A Study based on ERPs
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摘要 为了研究双趋与双避冲突情景所诱发的脑电成分的差异,本研究分别记录了16名健康大学生被试在双趋、双避、无冲突三种不同情景下完成决策任务的反应时数据与脑电成分.结果表明:(1)被试在冲突情景下的决策反应时均长于无冲突情景,其中双趋冲突下反应时长于双避冲突;(2)双趋冲突情景诱发的P2的波峰值更高,潜伏期也更短,无冲突情景所引发的P2波峰值最小,潜伏期最长;(3)冲突情景与无冲突情景在300 ~ 400 ms之间出现了LPC的分离,动机冲突比无冲突情景诱发的LPC更正.本研究中脑电数据与行为数据得出一致性结果,双趋比双避情景诱发更深程度的负性情绪与注意唤醒,即较高的动机冲突. In order to explore the electrophysiological differences between approach - approach and avoidance - avoidance conflict situations, we recorded EEG and reaction time data in 16 healthy participants as they were per- forming decision -making task under approach -approach, avoidance -avoidance conflict and conflict -free situa- tions. The results shows that : 1 ) reaction time under conflict significantly is longer than conflict - free situation, and approach - approach conflict situations is longer than avoidance - avoidance ;2) approach - approach conflict situa- tions induce a significantly larger amplitude peak and shorter latency of P2, and the amplitude is lowest under con- flict -free situation and the latency of which is longest; 3 )conflict and conflict -free situations have dissociable im- pacts on LPC between 300 -400ms, and the former induces a more positive LPC. In the current study, we come to a consistent conclusion that approach - approach conflict situation evokes a deeper attention arousal and stronger motivation conflict than avoidance- avoidance.
作者 刘耀中 杨鹏 唐志文 林祯秀 LIU Yaozhong1, YANG Peng1 , TANG Zhiwen2 , LIN Zhenxiu3 ( 1. Management School , Jinan University, Guangzhou, Guangdong 510632, China;2. Education Development Institute, Guangzhou University of Education, Guangzhou, Guangdong 510310, China ; 3. College of Humanities, Fujian Medical University, Fuzhou, Fujian 350108, China )
出处 《广州大学学报:社会科学版》 CSSCI 2013年第10期19-24,共6页 Journal of Guangzhou University(Social Science Edition)
关键词 双趋冲突 双避冲突 无冲突 决策 事件相关电位P2 approach - approach conflict avoidance - avoidance conflict conflict - free decision - making event - related potentials P2
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